Capacitive level meters CLM 40 INSTRUCTIONS MANUAL. průmyslová elektronika

Transcription

1 průmyslová elektronika INSTRUCTIONS MANUAL Capacitive level meters CLM 40 Before level meters usage please read instructions in this service manual and keep it for further use. Service manual is for all types of level meters series CLM-40. Producer reserves the right to make changes without any previous announcement.

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3 Table of contents 1. Measuring principle Areas of application Variants of sensors Dimensional drawings Installation and putting into operation Installation Electrical connection Setting Use, manipulation and maintenance Order code Correct specification examples Accessories Safety, protections and compatibility Marking of labels Specification...9

4 Used symbols To ensure maximum safety of control processes, we have defined the following safety instructions and information. Each instruction is labeled with the appropriate pictogram. Alert, warning, danger This symbol informs you about particularly important instructions for installation and operation of equipment or dangerous situations that may occur during the installation and operation. Not observing these instructions may cause disturbance, damage or destruction of equipment or may cause injury Information This symbol indicates particularly important characteristics of the device. Note This symbol indicates helpful additional information. all types Valid for: In the border are the types CLM, for which is intended the chapter. Safety All operations described in this instruction manual have to be carried out only by trained personnel or an accredited person. Warranty and post warranty service must be exclusively carried out by the manufacturer. Improper use, installation or set-up of the level meter can result in crashes in the application (overfilling of the tank or damage of system components). The manufacturer is not responsible for improper use, losses of work caused by either direct or indirect damage, and for expenses incurred during installation or use of the level meter. 1. Measuring principle Capacitive level meter CLM is intended for continuous measurement of the level of fuel (diesel). It consists of a measuring electrode and the electronics housing to which is firmly attached the cable. The electronic part converts the capacity to the current or voltage signal. For accurate measurements independent on the tank shape is the rod electrode placed inside the reference tube. Setting is done by touching the magnetic pen.the level meter has no neither mechanical moving parts and so its installation is very simple. The production of its electrodes is possible in any length in the range from 100 to 1000 mm, so that the level meter can go through entire height of the tank. Mounting of the tank level meter is done by using 5-hole flange (SAE). 2. Areas of application Accurate level measurement in diesel tanks of trucks, construction and agricultural machinery, locomotives etc. After consultation with the manufacturer can be used for measuring and other non-conductive liquids (eg.: biodiesel, oil, etc.). CLMs are resistant to any changes in the atmosphere above the surface (vacuum, pressure, vapours, dust). 3 CLM 40 Dinel, s.r.o.

5 3. Variants of sensors CLM 40N 40 Uncoated rod electrode and reference tube, setting is done by touching the magnetic pen for the measured medium, possibility of shortening electrodes to the desired length. Electrode length from 0.1 m to 1 m. 4. Dimensional drawings CLM 40N EMPTY M x 6 53,5 5 E Installation and putting into operation Please follow next 3 steps: Installation Electrical connection Setting Dinel, s.r.o. CLM 40 4

6 6. Installation Mounting of the tank level meter is done by using 5-hole flange (SAE). Distance from the wall may be arbitrary and distance from the bottom is recommended min. 10 mm. Under the flange of the level, it is necessary to put in the rubber gasket resistant to petroleum products (see. Accessories). The level meter can be also used for similar applications in stationary tanks, containers, etc. 7. Electrical connection The level meter is designed to be connected to supply unit or to controller through two or threewire cable with. Connection diagram and inner view of the connector as shown in picture. Always disconnect the power supply before connecting the level meter! You can use car battery (24 V) or power supply ( V DC). Fig.1: Scheme of electrical connection Electrical connection can only be made when de-energized! The voltage source should be preferably realized as a stabilized power supply unit with safe voltage from 18 to 36 V DC, which can be a part of the evaluation or display device. In case of strong ambient electromagnetic interference, paralleling of conductors with power distribution, or for the distribution to distance over 30 m, we recommend using shielded cable. 5 CLM 40 Dinel, s.r.o.

7 8. Setting The device shall be set up by applying the magnetic pen onto sensitive spots. Basic mode Setting of lower limit 4 ma 1. Drain the tank to the lower measured level. 2. Set the level meter output to the value of 4 ma by applying the magnetic pen to the sensitive spot " EMPTY" for at least 2 s. Hold the magnetic pen on the sensitive spot for at least additional 3 s to confirm the set value and store it in the internal memory of the level meter. 3. Any other setting is possible 2 s after the magnetic pen is removed from the sensitive spot. Setting of upper limit 20 ma 1. Fill the tank up to the upper measured level. 2. Set the level meter output to the value of 20 ma by applying the magnetic pen to the sensitive spot "FULL" for at least 2 s. Hold the magnetic pen on the sensitive spot for at least additional 3 s to confirm the set value and store it in the internal memory of the level meter. 3. Any other setting is possible 2 s after the magnetic pen is removed from the sensitive spot. Inverse mode In the inverse mode, set the lower limit of 4 ma when the tank is filled up to the upper measured surface level and the upper limit of 20 ma when the tank is drained to the lower measured surface level. Dinel, s.r.o. CLM 40 6

8 9. Use, manipulation and maintenance The level meter does not require any personnel for its operation. Follow-up displaying device is used to inform the technological entity operating personnel on the measured substance level height during the operation. MAINTAINCE OF LEVEL METER Maintenance of this equipment consists in verification of integrity of the level meter and of the supply cable. Depending on the character of the substance measured, we recommend to verify at least once per year the clarity of the ultrasound transducer emitting field and to clean it, respectively. In case any visible defects are discovered, the manufacturer or reseller of this equipment must be contacted immediately. It is forbidden to perform any modifications or interventions into the CLM 40 level meter without manufacturer's approval. Potential repairs must be carried out by the manufacturer or by a manufacturer authorized service organization only. Installation, commissioning, operation and maintenance of the CLM 40 level meter has to be carried out in accordance with this instruction manual; the provisions of regulations in force regarding the installation of electrical equipment have to be adhered to. 10. Order code CLM 40N 40 E cable cable length in m electrode length in m Connection method: V plastic cable gland with spiral (+ cable length) H plastic cable gland for protective hose (+ cable length) Type of output: I current ( ma) Process connection: F5 flange with 5 holes G thread G1" 11. Correct specification examples CLM 40N 40 F5 I V E1000 (N) performance to normal area; (40) rod electrode with reference tube; (F) flange with 5 holes; (I) current output ( ma); (V) cable gland; (E1000) length of electrode 1000 mm CLM 40N 40 G I H E800 (N) performance to normal area; (40) rod electrode with reference tube; (G) thread G1"; (I) current output ( ma); (H) cable gland for protective hose; (E800) length of electrode 800 mm 7 CLM 40 Dinel, s.r.o.

9 12. Accessories Optional for extra charge Extra cable (over the standard length 2 m) Rubber seal CLM-40 5 otv NBR ( for flange with 5 holes) 13. Safety, protections and compatibility Level meter CLM 40 is equipped with protection against electric shock on electrode, reverse polarity, output current overload, short circuit and short time over voltages. Electromagnetic compatibility is provided by conformity with standards: EN 55022/B, EN , EN , EN , EN , EN , EN Marking of labels Level meters label data CLM 40N 40 I-_: Made in Czech Republic CLM-40N-40-F5-I-V E 300 Cable: 1 m Ser. No.: U= V I = ma t a = C ATEST 8 SD 3482 IP68 Symbol of producer: logo Dinel web address: Country of origin: Made in Czech Republic Type of level meter: CLM-40N-40-_-I-_, include length of electrode: E v mm Length of cable: Cable 1 m Serial number: Ser. No.: - (from the left: production year, serial production number) Supply voltage: U = 9 30 V DC Output current range: I = 4 20 ma Ambient temperature range: t a = C Protection class: IP 68 Compliance mark: Electro-waste take-back system mark: Dinel, s.r.o. CLM 40 8

10 15. Specification Technical specification Supply voltage Current output V DC ma Load resistance R (U - 9) / 0,02 [Ω; V] Nonlinearity max. 1 % Temperature error Voltage error for current and voltage output Internal resistance / Electric strength (Electrode Housing) Coupling capacity / Electric strength (Housing Supply leads) Coupling capacity / Electric strength (Electrode Supply leads) Protection class max. 0,05% / K max. 0,3 μa/v 1 MΩ / 200 V AC 91 nf / 500 V AC 47 nf / 500 V AC IP68 Ambient temperature range C Cable PU 2x1 mm 2 Process connection Cable gland Weight (exclude electrode) CLM 40N 40 F5 I _ CLM 40N 40 G I _ CLM 40N 40 _ I V CLM 40N 40 _ I H Flange with 5 holes Thread G1" cable gland with spiral relief cable gland for protective hose Approx. 0,3 kg Material performance Sensor part Standard material Housing stainless st. W. Nr (AISI 304) Cable gland PA Cable insulation PUR Electrode stainless st. W. Nr (AISI 304) Reference tube stainless st. W. Nr (AISI 304) Process flange stainless st. W. Nr (AISI 304) Insulating bushing PA + GF30 9 CLM 40 Dinel, s.r.o.

11 Dinel, s.r.o. CLM 40 10

12 industrial electronics Dinel, s.r.o. U Tescomy Zlín Czech Republic Tel.: Fax: sale@dinel.cz The lastest version of this instruction manual can be found at Version: 10/2015